refactor(testing): introduce new testing api to support ng modules

BREAKING CHANGE:
- deprecations:
  * `withProviders`, use `TestBed.withModule` instead
  * `addProviders`, use `TestBed.configureTestingModule` instead
  * `TestComponentBuilder`, use `TestBed.configureTestModule` / `TestBed.override...` / `TestBed.createComponent` instead.

Closes #10354

modules/@angular/compiler/test/directive_resolver_mock_spec.ts

@@ -27,7 +27,7 @@ export function main() {
            expect(ngModule.selector).toEqual('cmp');
          });
 
-      it('should allow overriding the @NgModule', () => {
+      it('should allow overriding the @Directive', () => {
         dirResolver.setDirective(
             SomeComponent, new ComponentMetadata({selector: 'someOtherSelector'}));
         var metadata = dirResolver.resolve(SomeComponent);